What is meant by "concrete segregation"?

Concrete segregation refers to the separation of the components of the mix, which occurs when the heavier particles of aggregates settle and the lighter components, particularly the cement and water, rise to the surface. This phenomenon can lead to a non-uniform distribution of materials within the concrete, resulting in areas that may be too rich in cement or too lean in aggregates, ultimately affecting the strength, durability, and appearance of the finished product.

When segregation occurs, it can negatively impact the cohesion of the mix, causing issues such as weakening of the structure, susceptibility to cracking, and defects in the surface finish. Understanding and preventing segregation is crucial for ensuring the overall quality and performance of concrete in construction projects.